BMW 5 E60 525d 530d M57N2 Rear Left N/S Suspension Hub Leg Brake Caliper Disc

BMW 5 E60 525d 530d M57N2 Rear Left N/S Suspension Hub Leg Brake Caliper Disc is an original suspension component designed for the rear left side of BMW 5 Series E60 models equipped with the M57N2 engine. It serves as a solid foundation for professional repairs or restoring suspension geometry, ensuring consistent system performance and predictable vehicle handling. Thanks to the factory-standard design, the component integrates perfectly with other rear suspension parts, facilitating installation and subsequent adjustments.

Specifications and technical data

• SKU: 6770905-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6770905
• Substitutable numbers: 33326770905, 6770905, 33326754559, 6754559, 33326754557, 6754557, 33326770831, 6770831, 34216758057, 6758057, 34216766074, 6766074, 34216864061, 6864061, 34216753215, 6753215, 34216772085, 6772085, 33207572430, 7572430, 33217526745, 7526745
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The described rear suspension hub leg is responsible for the stable connection between the wheel hub and other structural components on the left side of the rear axle. In practice, this means:

• maintaining the correct wheel position relative to the body,
• transferring vertical and lateral loads while driving,
• working in conjunction with control arms, springs, and shock absorbers to dampen vibrations,
• maintaining correct wheel geometry during braking and acceleration.

The part is intended for installation in the rear left corner of the suspension, which is crucial for part selection and subsequent wheel alignment.

Benefits of using an original hub leg

Using a factory-spec hub leg in a BMW E60 525d/530d with the M57N2 unit allows for maintaining the parameters specified by the vehicle manufacturer. In practice, the user gains:

• consistent vehicle handling at higher speeds,
• repeatable behavior during emergency braking,
• proper integration with standard suspension and braking system components,
• easier diagnostics and geometry adjustment after repair.

For workshops and users, this means a lower risk of fitment issues and a reduction in the need for additional modifications during installation.

Condition, verification, and service application

The item comes from the Suspension replacement kits group, making it a good choice for comprehensive rear axle maintenance – especially after a collision, replacement of multiple components, or in high-mileage vehicles. The hub leg is intended for re-installation after prior inspection in a workshop, taking into account:

• checking mounting points for play and deformation,
• verifying compatibility with the wheel hub and braking components,
• inspecting contact surfaces with other suspension parts.

A component prepared in this way allows for restoring the factory performance characteristics of the rear suspension without the need to use aftermarket replacements with uncertain parameters.

Part selection by numbers and location

For the correct selection of the hub leg, it is crucial to consider the rear left side designation of the vehicle as well as the OEM part number and available interchangeable numbers, which are detailed in the technical specification. This allows for verifying compatibility with a specific version of the BMW E60 525d or 530d with the M57N2 engine and facilitates catalog work in professional service centers.

This information is particularly important when comparing parts from different model years or equipment configurations, where minor structural differences may affect installation.

Repair expansion and technical knowledge

When replacing the rear hub leg, it is worth considering a simultaneous inspection of other suspension elements – control arms, shock absorbers, springs, and the stabilizer bar. For users who want to better understand the relationships between these components and the impact of their condition on driving safety, the guide article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses practical aspects of operation and diagnostics, will be helpful.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other items from the same group, such as additional hub legs, control arms, or brackets, check out the available parts in the BMW suspension replacement kits category.